Destructor-furnace.



J. PRHVIROSE.

DESTRUCTOR FURNACE.

APPLlcATloN man SEPT. 4. 1914.

Patented July l11, 1916.

4 SHEETS-SHEET l.

www@

1 d l a A a fill/Iliff ms 'mums Fermes no mmm-umu. vasmncmm n. c.

l. PRIMROSE.

DESTRUCTOR FURNACE.

APPL|cAT1oN-r|LED SEPT. 4, 1914.

Emma my 11, 1916.

4 SHEETS-SHEET 2.

n1: Nunn METERS co4. IvmTv-Ll'rrm wAsHlNwN. n. c

1 PmMRosE.

DESTHUCTOR FURNACE.

APPLICATION FILED SEPT. 4, 19

m @www '4' Patented July 1,1, 1916.

4 SSSSSSSSSSSS 4.

JOHN PRUVROSE, 0F NEW YORK, N. Y., ASSG-NOR T0 THE DESTRUCTOR COMPANY, A

CORPORATIN OF NEW YORK.

DESTRUCTR-FURNACE.

Application filed September 4, 1914.

To ZZ 'whom t may concern.'

Be it known that l, tloi-nv Pnnvinosn, a subject of the King of GreatBritain, residing at N ew York, in the county and State of New York,have invented certain new and useful improvements inDestructor-Furnaces, of which the following is a full, clear, and exactdescription.

rThe invention which constitutes the subject matter of this applicationrelates to a destructor furnace and particularly to the grate thereofwhich renders the furnace more economical in operation and more easilymanipulated.

One of the more important features of this grate from the standpoint ofupkeep is its great iiexibility which relieves it from practically allstrain which would eventually result in distortion and cracls. Iaccomplish this feature, as will be clearly apparent from the detaileddescription below, by leaving the grate to hang free from its top and byit being perfectly free to adjust itself in any direction according totemperature conditions.

Another important feature of this invention consists in dividing thechamber below the grate into interconimunicating compartments, one ofthese compartments constituting the ash-pit and the other compartmentconstituting an air chamber, so that the air may be forced from said airchamber into the ash-pit and fire in such a manner that it serves tocool the sides of the grate and also is supplied to the fire forsupporting combustion upon the grate. rihis division of the chamber intointercommunicating compartments is accomplished preferably by means of apartition extending upwardly from the bottom of said chamber inproximity to the lateral supporting flange of the grate.

in destructor furnaces of the type shown in the accompanying drawings,it is essential that some convenient form of means be employedforremoving the clinler and another important feature of my inventionhas to do with novel mechanism of this character; and, as will moreclearly appear from the detail description below, this clinker removingmeans is so related to the rigid grate that the air which is forcedthrough the latter to support combustion, coming as it' doesSpecification of Letters Patent.

ratentea amy ii, raie.

Serial No. 860,153.

into intimate contact with said means, serves to prevent overheating ofthe same from the high temperature normally existing within the grate.

Other important features of my invention will appear from the detaileddescription herewith taken in connection with the accompanying drawing,in which- Figure 1 is a central longitudinal section of my invention.Fig. 2 is a front view of the furnace and grate with the front of saidfurnace removed. Fig. 3 is a section on line 3-3 of Fig. 1. Fig. Llis ahorizontal section with parts broken away. Fig. 5 illustrates anenlarged view of a detail. Fig. 6 is an enlarged view of thepartitioning wall and associated feature.

Referring to the drawings in detail, the walls of the furnace arepreferably divided vertically into three parts, namely the upper portion10, the lower part 11 composed of steel structure, and the intermediateframework or portion 12 which is preferably utilized for supporting thetrough grate of the furnace. The lower part or steel structure acts as apartition to separate the chamber underneath the adjoining grate orgrates. The trough grate is made of side plates composed of a pluralityof transverse sections 13 suitably secured to each other and providedwith outwardly projecting lateral flanges let at their upper ends forsuspending the plates from the framework 12 and also provided withinwardly projecting lateral flanges 15 at their lower ends. The gratealso has a perforated bottom likewise composed -of a plurality oftransverse sections 16 preferably contacting with each other andslidably mounted upon the vlateral flanges 15 of the side plates. As amatter of convenience the bottom sections, preferably correspond inlength to the length of the sections of the side plates. The forwardsections of the side plates are firmly bolted or otherwise secured tothe steel work of the front wall of the furnace while the grate at therear is provided with a section 17 which is secured to the side platesand is movably supported by the framework 12 of the rear wall of thefurnace. rlhe lateral flanges 14. of the side plates preferably restfreely upon an asbestos support 18. From the above description it willbe at once apparent that knet result it is relieved of all strains whichtend to distort or crack the same.

In view of the excessive heat in the normal operation of these furnaces,and in view of the weight of the material supported by the grate thereis a tendency for the side plates of the grate to sag or assume avertical position. In order to overcome this, I provide rigid meanswhich engages with the outer lower edge or ribs of the side plates. Themeans in this particular case is preferably the steel structure or walls19, but it will be understood that I do notv limit myself to such aconstruction. This wall 19 together with its extension or jacket 20serve as a partition to divide the chamber below the grate intointer-communicating compartf ments 21 and 22. The partition extendsupwardly from the bottom of the chamber into proximity to the outwardlyprojecting lateral'ianges 14 of said grate and the interior compartment21 constitutes the ash-pit of the furnace and the exterior compartment22 constitutes an air chamber. The jacket in conjunction with the ribs23 of the grate against the outer edges of which the jacket preferablycontacts, defines air passages 24 from the upper to the lower edges ofthe Vside plates. Y

At 25 is indicated an air supply valve for Flooding the air-chamber withair whereby the said air is forced over the upper edge of 'the partitionand downward through the air passages 24 into the ash-pit and the liret0 cool the sides of the grate Vand for the purpose of supportingcombustion on the grate.

It will be clear from the drawings and the v description relatingthereto that the ash-pit 21 is preferably located directly underneaththat part of the grate which is perforated and that the air-chamberr22preferably eX- tends the entire length of both sides of the ash-pit andacross the rear behind said pit, the rear end. of the ash-pit beingseparated vfrom the rearportion of this air chamber by means of thedownwardly andY inwardly inclined wall 26 and its extension 27. Aspreviously stated, in this exterior chamber is located an air supplyvalve 25, and this valve isoperated at will by means of a suitable flever 28 at the front and suitable mechanism Ycast thereto at suitableintervals and are in such form as to support an angle iron 31 and leavea space between' the latter and said ridges for circulation of air,thereby keeping angle iron from burning. A steel plate 32 is secured tothe rear end and a perforation 38 is provided at the forward end of theangle iron so that when the furnace is in condition to be clinkered theangle iron is pulled forwardly out of the furnace by any suitable powermechanism engaging in said perforation and by virtue of the steel plateat the rear the clinker is withdrawn also.

From the above description it will be seen that I have produced a grateof very simple construction, one that is very easy to manufacture, easyof manipulation and also very easy of installation. It is to be understood, however, that I do not propose to limit myself to the exactconstruction described and shown as this merely constitutes thepreferred embodiment of my invention, and it will be obvious to thoseskilled in the art that minor changes may be made in points of detailand other embodiments resorted to without necessarily departing from thetrue spirit and scope of my invention.

What I claim is:

1. In a destructor furnace, a trough grate comprising side platescomposed of a plurality of transverse sections secured to each other andfreely suspended from their tops and a bottom composed of a plurality of-transverse sections and supported upon the side plates, said furnaceprovided with means at the front thereof to which the front sections ofthe grate are secured, and with means at the rear to which the rear endof said grate is slidably suspended to permit of a free longitudinalmovement of the latter.

2. A destructor furnace in combination with a grate freely suspendedfrom the walls therein to adjust itself in any direction according totemperature conditions, said grate comprising side plates suspended attheir upper ends from the side walls of the furnace, means at the bottomof said plates for holding them in position and a suhstair tially flatbottom supported upon said side plates, said grate being secured at itsfront to the front walls of the furnace and the rear end being slidablysupported by the rear wall of the furnace.

3. A destructor or other furnace having a grate the front end of whichis securedvto the front wall of the furnace, the sides of which arefreely suspended from the side walls of the furnace, and the rear end ofwhich is slidably connected with the rear wall of the furnace, wherebysaid grate is free to adjust itself in any direction according totemperature conditions.

4. A destructor furnace, comprising a framework in the side and rearwalls therein combination with a perforated trough grate freelysuspended from said framework and provided with an upwardly projectingcontinuous perforated ridge eX- tending along the bottom thereof, an anangle iron slidably mounted upon said ridge provided with means thereonfor removing the clinker from the furnace, said ridge provided withprojections thereon to space the angle iron from the ridge whereby airis supplied above the grate through perforations in the top of theridge.

5. In a refuse destructor' or other furnace a perforated trough gratefreelysuspended from the side and rear walls of the furnace to permitfree expansion in all directions, said grate provided with a centralridge projecting` upwardly therefrom, and means associated with saidridge for removing upon being reciprocated the clinlrer from saidfurnace, said means comprising an angle iron slidably mounted upon saidridge and a clinlrer engaging means secured to the rear end of saidangle iron.

6. In a refuse destructor or other furnace,

a trough grate provided with a central perfoi-ated ridge provided withupwardly projeeting lugs cast thereto, in combination with a clinlierremoving means supported upon but spaced from said ,ridge by said lugswhereby the passage of air through the perforations to cool theclinlrering means and for supporting combustion in said furnace ispermitted.

7. In a refuse destructor or other furnace, in combination, a troughgrate comprising side plates freely suspended from the walls of saidfurnace and a perforated bottom supported by said plates, said troughgrate and the walls of said furnace dening a longitudinal chamber belowsaid grate, and means for partitioning said chamber intointer-communicating compartments, one of i said compartments being belowsaid grate and serving as an ash-pit and the other of said compartmentsserving as a chamber through which air is flooded to the grate, saidpartition means, in conjunction with said suspending means, adapted tomaintain the side plates of said grate in proper position. 4

8.. In a refuse destructor or other furnace comprising in combination a.trough grate having a perforated bottom and being freely suspended fromthe walls of the furnace, said trough grate and the walls of saidfurnace defining a longitudinal chamber below said grate, and means forpartitioning said chamber into inter-communicating compartments, one ofsaid compartments being located substantially below the said grate andconstituting the ash-pit of the furnace, and the other compartmentsurrounding the sides and rear of said ash-pit and constituting an airchamber through which air is flooded to the grate.

9. In a destructor furnace, a trough grate comprising side platescomposed of a plurality of transverse sections secured to each other andfreely suspended from their tops,

a substantially flat bottom composed of a plurality of transversesections contacting with each other and slidably supported upon saidside plates, and a section for closing the rear secured to each of saidside plates and slidably supported in the rear wall of the furnace topermit free longitudinal movement of the grate.

10. In a destructor furnace, a trough grate comprising side platesadapted to be freely suspended at their tops from the side walls of thefurnace, a substantially flat bottom slidably supported upon said sideplates, and a section for said grate for closing the rear end thereof,said section secured to each of said side plates and adapted to beslidably supported in the rear wall of the furnace.

11. In a destructor furnace, a trough grate comprising inwardly inclinedside plates adapted to be freely suspended at their tops from the sidewalls of the furnace and provided with laterally and inwardly projectingflanges at the lower edges thereof, a substantially flat bottom slidablysupported upon the lateral flanges of said side plates, and a sectionfor said Vgrate for closing the rear end thereof, said section securedto each of said side plates and adapted to be slidably supported in therear wall of the furnace.

12. In a destructor or other furnace, a trough grate comprising inclinedside plates provided with flanges at their tops from which said platesare adapted to be freely suspended from the side walls of the fur-` naceand also provided with laterally and inwardly projecting flanges at thelower edges thereof, a substantially llat bottom slidably supported uponthe lateral flanges of said side plates, and a section of said grate forclosing the rear thereof, said section secured to each of said sideplates and -provided with a flange at the upper edge thereof adapted tobe slidably connected with the rear wall of the furnace, whereby freelongitudinal movement of the grate is permitted.

13. In a destructor or other furnace, a trough grate secured to thefront wall of the furnace and side plates adapted to be freely suspendedat their tops from the side walls of the furnace, a substantiallyflat-bottom slidably supported on the side plates, and means engagingwith the lower end of said side plates to prevent the latter fromsagging or assuming a vertical position.

14. In a destructor or other furnace, a trough grate rigidly secured atits forward edge to the front wall of the furnace and slidably suspendedat its sides and rear to the side and rear walls respectively of thefurnace, said grate comprising side plates and a bottom slidablysupported upon said side plates, in combination with a substantiallyrigid means for engaging with the vvis lower edge of said side plates toprevent the latter from sagging or assuming a Vertical position.

l5. -In a destructor or other furnace, a trough grate composed of aplurality of sections, the forward section of said grate being rigidlysecured to the front wall of the furnace, the rear sections of saidgrate Vbeing freely suspended from the rear wall of the furnace, and theportion intermediate of said front and rear sections being freelysuspended from the side walls of the furfurnace, and the rearmostsection of said side plates and said bottom being secured to the rearsection of the grate. y Y

17. In a destructor or other furnace, coniprising in combination, atrough grate the front end of which is closed by and secured to thefront walls of the furnace, said grate provided with a lateral flange atits upper edge extending around the sides and rear thereof, and freelysuspended from the side and rear walls of said furnace, the walls of inthe presence of two subscribing witnesses.

JOHN PRIMROSE. Witnesses:

WM. BOHLEBER, WILLIAM P. JoHNsoN.

vCopies of this patent may be obtained for ive cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

